Tuning the optical, magnetic, and electrical properties of ReSe2 by nanoscale strain engineering

Shengxue Yang, Cong Wang, Hasan Sahin, Hui Chen, Yan Li, Shu Shen Li, Aslihan Suslu, Francois M. Peeters, Qian Liu, Jingbo Li, Sefaattin Tongay

Research output: Contribution to journalArticle

200 Scopus citations

Abstract

Creating materials with ultimate control over their physical properties is vital for a wide range of applications. From a traditional materials design perspective, this task often requires precise control over the atomic composition and structure. However, owing to their mechanical properties, low-dimensional layered materials can actually withstand a significant amount of strain and thus sustain elastic deformations before fracture. This, in return, presents a unique technique for tuning their physical properties by "strain engineering". Here, we find that local strain induced on ReSe2, a new member of the transition metal dichalcogenides family, greatly changes its magnetic, optical, and electrical properties. Local strain induced by generation of wrinkle (1) modulates the optical gap as evidenced by red-shifted photoluminescence peak, (2) enhances light emission, (3) induces magnetism, and (4) modulates the electrical properties. The results not only allow us to create materials with vastly different properties at the nanoscale, but also enable a wide range of applications based on 2D materials, including strain sensors, stretchable electrodes, flexible field-effect transistors, artificial-muscle actuators, solar cells, and other spintronic, electromechanical, piezoelectric, photonic devices.

Original languageEnglish (US)
Pages (from-to)1660-1666
Number of pages7
JournalNano Letters
Volume15
Issue number3
DOIs
StatePublished - Mar 11 2015

Keywords

  • 2D materials
  • Transition metal dichalcogenides
  • excitonics
  • magnetism
  • photoluminescence
  • strain engineering

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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  • Cite this

    Yang, S., Wang, C., Sahin, H., Chen, H., Li, Y., Li, S. S., Suslu, A., Peeters, F. M., Liu, Q., Li, J., & Tongay, S. (2015). Tuning the optical, magnetic, and electrical properties of ReSe2 by nanoscale strain engineering. Nano Letters, 15(3), 1660-1666. https://doi.org/10.1021/nl504276u